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CVE-2022-49935

23
FAUCET Score

CVE-2022-49935 is a use-after-free vulnerability in the Linux kernel's dma-buf/dma-resv component. It arises from an insufficient check when adding fences to a dma_resv object, allowing userspace to potentially trigger a use-after-free error. This vulnerability carries a CVSS score of 7.8 (High), indicating that a local, low-privileged attacker can achieve high impact on confidentiality, integrity, and availability with low attack complexity. There is currently no evidence of active exploitation, nor are there public exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0, < 5.19.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 20th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-477.10.1.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-284.11.1.el9_2
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (2)

redhatCVE-2022-49935Moderate

kernel: dma-buf/dma-resv: check if the new fence is really later

Jun 18, 2025
microsoft2025-Jun/CVE-2022-49935Important

dma-buf/dma-resv: check if the new fence is really later

Jun 10, 2025

References

git.kernel.org / stable/c/a3f7c10a269d5b77dd5822ade822643ced3057f0
Patch
git.kernel.org / stable/c/c4c798fe98adceb642050819cb57cbc8f5c27870
Patch